WO2010107211A2 - Dispositif d'antenne multibande et dispositif de communication utilisant ladite antenne - Google Patents

Dispositif d'antenne multibande et dispositif de communication utilisant ladite antenne Download PDF

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Publication number
WO2010107211A2
WO2010107211A2 PCT/KR2010/001585 KR2010001585W WO2010107211A2 WO 2010107211 A2 WO2010107211 A2 WO 2010107211A2 KR 2010001585 W KR2010001585 W KR 2010001585W WO 2010107211 A2 WO2010107211 A2 WO 2010107211A2
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WO
WIPO (PCT)
Prior art keywords
antenna device
resonator
inductance
parallel
capacitance
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PCT/KR2010/001585
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English (en)
Korean (ko)
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WO2010107211A3 (fr
Inventor
유병훈
성원모
김기호
Original Assignee
주식회사 이엠따블유
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Publication of WO2010107211A2 publication Critical patent/WO2010107211A2/fr
Publication of WO2010107211A3 publication Critical patent/WO2010107211A3/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching

Definitions

  • the present invention relates to an antenna device, and more particularly, to a multiband antenna device and a communication device using the same, which can be manufactured compactly by combining a primary resonator and a zero resonator.
  • An antenna is an element disposed at the end of signal transmission and reception in a wireless communication device, and receives or transmits a signal by resonating at a specific resonance frequency.
  • Such antennas generally have an electrical length that is proportional to the operating wavelength.
  • monopole antennas are manufactured to have a length of one quarter of the operating wavelength. In other words, the operating frequency of the antenna is determined by the electrical length of the antenna.
  • the conventional antenna Due to the relationship between the electrical length of the antenna and the operating wavelength, some problems have arisen in the conventional antenna.
  • the longer the operating wavelength i.e., the lower the operating frequency
  • the longer the electrical length of the antenna and thus the larger the antenna. Therefore, there is a difficulty in including such an antenna inside a small communication device.
  • multi-band antennas have been manufactured by varying the shape of the antenna conductor, that is, by using electromagnetic coupling between the patterns. However, it is difficult to accurately adjust the operating frequency and obtain resonance accurately in the required band. Hard.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a multi-band antenna which can be manufactured in a small size. It is also an object of the present invention to provide a multi-band antenna that can be used in the required frequency band by accurately adjusting the operating frequency.
  • a first resonator connected to a power supply element and resonating at a first resonant frequency, and connected to the power supply element in parallel with the first resonator,
  • An antenna device comprising a second resonator configured to resonate at a second resonant frequency different from the resonant frequency, wherein the first resonator includes a radiator for radiating an electromagnetic wave signal, and the second resonator includes a metamaterial structure.
  • the metamaterial structure preferably includes a series capacitance and a parallel inductance. At least one of the series capacitance and the parallel inductance may be a device formed on a substrate.
  • the series capacitance may be a capacitance between the conductors formed on both sides of the substrate.
  • the conductor formed on one surface of the substrate is connected to the radiator, and the conductor formed on the other surface of the substrate is connected to the parallel inductance.
  • the parallel inductance may be an inductance induced by a conductor formed on a substrate.
  • the metamaterial structure further includes a series inductance connected in series with the series capacitance and a parallel capacitance connected in parallel with the parallel inductance.
  • the series inductance may be an inductance induced by a conductor formed on a substrate.
  • the parallel capacitance may be a capacitance between the conductor formed on the substrate and the ground plane.
  • the first resonant frequency and the second resonant frequency are adjacent to each other so that the antenna device has a broadband characteristic.
  • a wireless communication device comprising the antenna device.
  • the multi-band antenna can be miniaturized by using zero-order resonance by the metamaterial structure.
  • the resonance frequency can be easily and accurately adjusted by changing the value of the element of the zero-order resonant structure.
  • FIG. 1 is a diagram illustrating an antenna device according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of an actual implementation of the antenna device shown in FIG. 1.
  • 3 is an equivalent circuit diagram for explaining the metamaterial structure.
  • FIG. 4 is a diagram showing a standing wave ratio of an antenna device of an embodiment of the present invention.
  • capacitor capacitor
  • inductance inductance
  • the terms “capacitor”, “capacitance”, “inductor”, “inductance”, etc. are used herein to refer to devices having such electrical properties as well as to include circuit structures configured to have such electrical properties.
  • the "inductor” may be a lumped constant circuit implemented with an inductor element or a distributed constant circuit implemented using a transmission line. Accordingly, it is to be understood that the circuits described herein include implementations by distributed constant circuits as well as implementations by lumped constant elements.
  • the antenna device of this embodiment includes a first resonator unit 110 that resonates at a first resonant frequency, and a second resonator unit 130 that resonates at a second resonant frequency different from the first resonant frequency.
  • the first resonator 110 may be a conventional antenna element including a radiator for radiating an electromagnetic wave signal.
  • the first resonator 110 is an antenna in which one end of a radiator, such as a monopole antenna, a Planar Inverted F-type Antenna (PIFA), or a Planar L-type Antenna (PLA), is connected to the power supply element 120 to operate. Can be.
  • the first resonator 110 may be a multi-band antenna device resonating in one or more bands according to the related art.
  • the first resonant frequency refers to any one of resonant frequencies of the first resonator.
  • the second resonator 130 connected to the power supply element 120 in parallel with the first resonator 110 may include a metamaterial structure.
  • Metamaterial refers to a material or electromagnetic structure that is artificially designed to have special electromagnetic properties not normally found in nature. In general, and in this specification, metamaterial refers to permittivity. Refers to materials or such electromagnetic structures that are both negative and permeability negative.
  • Such materials are also called double negative (DGN) materials in the sense of having two negative parameters.
  • DGN double negative
  • metamaterials have a negative reflection coefficient due to their negative dielectric constant and permeability, and thus are also called NRI (Negative Refractive Index) materials.
  • NRI Negative Refractive Index
  • metamaterials are sometimes referred to as left-handed materials (LHMs).
  • LHMs left-handed materials
  • the relationship between ⁇ (phase constant) and ⁇ (frequency) is not linear in the metamaterial, and the characteristic curve is also present in the left half of the coordinate plane. Due to the nonlinear characteristics, the metamaterial has a small phase difference according to frequency, so that a wideband circuit can be realized. Since the phase change is not proportional to the length of the transmission line, a small circuit can be realized.
  • such a metamaterial structure generally includes a series capacitance and a parallel inductance, which will be described with reference to FIG. 3.
  • a typical transmission line is equivalent to a T network comprising a series inductance (L R ) by the transmission line itself and a parallel capacitance (C R ) induced between the transmission line and the ground plane.
  • the metamaterial structure includes a series capacitance C L and a parallel inductance L L instead of or in addition to the general transmission line structure.
  • the left-handed (LH) characteristic of the metamaterial is introduced into the circuit, and zero-order resonance occurs.
  • This zero-order resonance has a different mechanism from that of a conventional antenna (i.e., primary resonance) and its resonance frequency is determined by the values of capacitance (C R , C L ) and inductance (L R , L L ). do. Therefore, the resonance frequency can be freely determined irrespective of the electrical length of the antenna, and it is possible to generate resonance in the low frequency band without increasing the size of the antenna.
  • the second resonator 130 has a metamaterial characteristic including a series capacitance 132 and a parallel inductance 138, and also includes a series inductance 134 and a parallel capacitance 136 as in a conventional transmission line. do. As a result, the second resonator 130 generates zero-order resonance.
  • the overall antenna device resonates at two frequencies, a first resonance frequency determined by the first resonator 110 and a second resonance frequency determined by the second resonator 130, and resonance occurs. At the frequency of the electromagnetic radiation is generated through the radiator included in the first resonator 110. Therefore, the antenna device can operate as a dual (or multi) band antenna device.
  • the first resonant frequency and the second resonant frequency may be adjacent to each other so that the antenna has a wideband characteristic.
  • FIG. 4 showing the standing wave ratio of the antenna device according to the embodiment of the present invention
  • resonance occurs in a low frequency band by the first resonator, and is caused by the second resonator.
  • Resonance occurs in the band adjacent to it. Therefore, the antenna as a whole has a wide band characteristic.
  • FIG. 2 is a diagram illustrating an example of an actual implementation method of the antenna device illustrated in FIG. 1.
  • the first resonator 110 (FIG. 1) is composed of a conductive radiator 210.
  • the radiator 210 has an electrical length and shape suitable to resonate at a first resonant frequency.
  • the radiator 210 is connected to the power supply circuit 120 (FIG. 1) at one end 222.
  • the second resonator 130 (FIG. 1) is composed of a circuit formed on the substrate 240.
  • the second resonator 130 includes a conductor 242 formed on the substrate 240.
  • the substrate 240 may be a substrate such as a printed circuit board (PCB), a flexible PCB (FPCB), or the like.
  • the conductor 242 is connected to the radiator 210 to connect the first resonator and the second resonator.
  • the series capacitance 132 (FIG. 1) and the parallel inductance 138 (FIG. 1) included in the second resonator 130 may be devices formed on the substrate 240.
  • the series capacitance 232 and the parallel inductance 238 are each implemented as a capacitor element and an inductor element, mounted on a substrate and connected to the conductor 242.
  • series capacitance 232 may be implemented using transmission lines with interdigital capacitors, capacitors with edge couples, and the like.
  • the parallel inductance 238 may be an inductance induced by a conductor (ie, a transmission line) formed on the substrate. In this case, the inductance value may be adjusted by adjusting the length of the transmission line, and the transmission line may be formed in a spiral, helical, and meander shape to minimize the space occupied by the inductance.
  • the series capacitance 232 may be a capacitance between conductors formed on both sides of the substrate 240.
  • a conductor connected to the radiator 210 may be formed on the front surface of the substrate 240
  • a conductor (for example, the conductor 242) connected to the parallel inductance 238 may be formed on the rear surface of the substrate 240. have.
  • the conductor connected to the parallel inductance 238 is not connected to the first resonator unit.
  • capacitance can be induced between the conductors formed on the front and rear surfaces of the substrate 240, which can function as series capacitance.
  • the second resonator further includes a series inductance 234 connected in series to the series capacitance 232 and a parallel capacitance 136 (FIG. 1) connected in parallel to the parallel inductance 238.
  • the series inductance 234 may be an inductor element formed on the substrate 240, similar to the parallel inductance, or may be an inductance induced by a conductor (ie, a transmission line) formed on the substrate 240.
  • a conductor ie, a transmission line
  • the inductance value can be adjusted by adjusting the length of transmission line, and the transmission line is formed in spiral, helical, meander shape to minimize the space occupied by inductance. Can be.
  • the parallel capacitance can be a transmission line formed on the substrate, that is, capacitance between conductor 242 and ground plane 250.
  • the ground plane 250 may be a ground plane generally included in a communication device or may be a ground plane formed on the substrate 240. In this case, it is not necessary to form a separate parallel capacitance, and it is possible to induce capacitance by simply forming the conductor 242 on the substrate 240. The value of this parallel capacitance can be changed by adjusting the distance between the conductor 242 and the ground plane 250.
  • the parallel capacitance may be a structure using separate elements or transmission lines, such as serial capacitance 232.
  • the antenna device of the present invention may be included in a wireless communication device and used for communication.
  • the wireless communication device including the antenna device of the present invention can provide the broadband or multi-band communication function by including the antenna device of the present invention at the terminal of signal transmission and reception.

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Abstract

L'invention concerne un dispositif d'antenne multibande et un dispositif de communication utilisant ladite antenne. Le dispositif d'antenne comprend : un premier résonateur qui est connecté à un élément d'alimentation électrique et résonne à une première fréquence de résonance ; et un second résonateur qui est connecté à l'élément d'alimentation électrique en parallèle avec le premier résonateur, et qui résonne à une seconde fréquence de résonance qui est différente de la première fréquence de résonance. Le premier résonateur comprend un émetteur émettant des signaux électromagnétiques, et le second résonateur comprend une structure de métamatière. Le dispositif d'antenne peut être conçu pour être à échelle réduite et pour présenter des caractéristiques multibande ou large bande, et sa fréquence de fonctionnement peut facilement être ajustée.
PCT/KR2010/001585 2009-03-16 2010-03-15 Dispositif d'antenne multibande et dispositif de communication utilisant ladite antenne WO2010107211A2 (fr)

Applications Claiming Priority (2)

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KR1020090022246A KR101018628B1 (ko) 2009-03-16 2009-03-16 다중 대역 안테나 장치 및 이를 이용한 통신 장치
KR10-2009-0022246 2009-03-16

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WO2010107211A2 true WO2010107211A2 (fr) 2010-09-23
WO2010107211A3 WO2010107211A3 (fr) 2011-01-06

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104836029A (zh) * 2014-02-12 2015-08-12 宏碁股份有限公司 移动通信装置
CN104993235A (zh) * 2015-06-12 2015-10-21 联想(北京)有限公司 一种天线装置及电子设备
CN107275804A (zh) * 2016-04-08 2017-10-20 康普技术有限责任公司 移除共模共振（cmr）和差模共振（dmr）的多频带天线阵列
US11431088B2 (en) * 2014-02-12 2022-08-30 Huawei Device Co., Ltd. Antenna and mobile terminal

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101236819B1 (ko) * 2011-03-09 2013-02-25 주식회사 이엠따블유 안테나 결합 구조 및 이를 포함하는 전자 기기
KR101851590B1 (ko) 2011-11-28 2018-04-25 삼성전자주식회사 무선 전력 전송 시스템 및 무선 전력 전송 시스템에서 다중 모드 공진기
KR101432748B1 (ko) * 2013-03-18 2014-08-20 서강대학교산학협력단 Ｌｃ(인덕터와 커패시터) 회로의 소형 영차 공진 안테나
KR102140256B1 (ko) * 2019-05-28 2020-07-31 주식회사 이엠따블유 안테나 모듈 및 이를 포함하는 차량

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7446712B2 (en) 2005-12-21 2008-11-04 The Regents Of The University Of California Composite right/left-handed transmission line based compact resonant antenna for RF module integration
KR101086743B1 (ko) 2006-08-25 2011-11-25 레이스팬 코포레이션 메타물질 구조물에 기초된 안테나
EP2160799A4 (fr) 2007-03-16 2012-05-16 Tyco Electronics Services Gmbh Réseaux d'antennes métamatériaux avec mise en forme de motif de rayonnement et commutation de faisceau

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
SASAKI, Y. ET AL.: 'Slotted Composite Right/Left-Handed Strip Lines for Leaky Wave Antenna Applications' MICROWAVE CONFERENCE 2006 ASIA-PACIFIC 12 December 2006, pages 923 - 926 *
SATO, K. ET AL.: 'Composite Right/Left-Handed Leaky Wave Antenna for Millimeter-Wave Antenna for Millimeter-Wave Automotive Application' FIRST EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION 2006, NICE November 2006, NICE, pages 1 - 4 *
SEONGMIN, PYO ET AL.: 'A Meta-Material Symmetrical Periodic Antenna with Efficiency' MICROWAVE CONFERENCE 2008 ASIA-PACIFIC 16 December 2008, pages 1 - 4 *
TAEMA, D. ET AL.: 'Composite Right/Left-Handed Waveguide Beam-Steering Leaky Wave and Short-Ended Stubs' MICROWAVE CONFERENCE 2008 ASIA-PACIFIC 16 December 2008, pages 1 - 4 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104836029A (zh) * 2014-02-12 2015-08-12 宏碁股份有限公司 移动通信装置
US11431088B2 (en) * 2014-02-12 2022-08-30 Huawei Device Co., Ltd. Antenna and mobile terminal
US20220368010A1 (en) * 2014-02-12 2022-11-17 Huawei Device Co., Ltd. Antenna and Mobile Terminal
US11855343B2 (en) 2014-02-12 2023-12-26 Beijing Kunshi Intellectual Property Management Co., Ltd. Antenna and mobile terminal
CN104993235A (zh) * 2015-06-12 2015-10-21 联想(北京)有限公司 一种天线装置及电子设备
CN104993235B (zh) * 2015-06-12 2019-01-15 联想(北京)有限公司 一种天线装置及电子设备
CN107275804A (zh) * 2016-04-08 2017-10-20 康普技术有限责任公司 移除共模共振（cmr）和差模共振（dmr）的多频带天线阵列
CN107275804B (zh) * 2016-04-08 2022-03-04 康普技术有限责任公司 移除共模共振（cmr）和差模共振（dmr）的多频带天线阵列

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KR101018628B1 (ko) 2011-03-03
WO2010107211A3 (fr) 2011-01-06
KR20100104086A (ko) 2010-09-29

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